最近在完成通联世界五大洲的目标，目前就差NA和SA还未通联过，在频谱上也很难见到他们的信号，是要在灰线左右才能通联吗？

@"Adhgk"#p98238 不同地理位置不同季节没固定的说法我这里大规律是冬季晚上9点后NA 夏季白天6-9点NA SA 灰线吧

@"BG2EFX"#p98239 早上6-9啊，那看来还得早起

半夜20米通过NA，SA可以等灰线打打智利什么的

一个月前，有一段时间半夜的17米也是很强势的

@"Adhgk"#p98238 安徽这边冬天的半夜时常在7Mhz接收到美国的ft8信号 -20dB以下

6区，FT8，10W，20m\17m,最近这几天早上5-7点左右，可以稳定通几个南美的。同样比较好奇，如何通北美。早上这个时间段几乎收不到美国的信号。

4区南京，FT8，15W，20米波段，晚上9点左右可以通到个别加拿大与美国

Roughly when did the spread of "America" begin in South America?

Adhgk

I am currently working towards completing the goal of connecting all five continents through Unicom World. Currently, I have not yet connected NA and SA, and their signals are also difficult to detect on the spectrum. Is it necessary to connect them within the gray line range?

？

BG2EFX

Adhgk
Varying geographical locations and seasons do not have a fixed definition.
The general rule I've observed is: No activity between 9 PM and midnight in winter, and no activity between 6 AM and 9 AM in summer.
SA gray line, please.

BH6BMJ

Adhgk In Anhui province, I often receive FT8 signals from the US at 7 MHz during late nights, with signal strengths below -20 dB.

Adhgk

BG2EFX So, it seems I need to get up early, between 6 and 9 in the morning.

BG4QBF

Around midnight, use a 20-meter band to communicate via NA. SA can wait for the "gray line" and then contact Chile, etc.

BH6BAS

There are many people who use FT8.

BH3XZT

About a month ago, there was a period where the 17-meter boat was particularly strong at night.

mentha

Zone 6, FT8, 10W, 20m/17m. Recently, around 5-7 AM, I've been able to consistently contact several South American stations. I'm also curious about how to communicate with North American stations during this time. I rarely receive signals from the US during this morning period.

Ayin

Zone 4, Nanjing, FT8, 15W, 20-meter band, approximately 9 PM local time, can connect to some locations in Canada and the United States.

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